Edgae s



(No Model.)

E. S. COMES.

TELEPHONE SWITCH.

Patented Nov.- 27,1894l UNITED STATES PATENT OFFIcII EDGAR S. OOMBS, OFROCHESTER, NEW YORK, ASSIGNOR OF ONE-HALF TO IRVING PAINE, OF SAMEPLACE.

II'ELEPHONE-SWITCH.

SPECIFICATION forming part of `Letters Patent No. 529,826, datedNovember 27, 1894. Appnmion nea october 9,1894. sean N0.525.381 (NomodelTo all whom it may concern.:

Be it known that I, EDGAR S. COMBS, a citizen of the United States,residing at Rochester, in the county of Monroe and State of New York,have invented certain new'and useful Improvements in Telephone-Switches,of which the following is a specification.

My invention relates to telephones, and has reference more particularlyto a novel construction of the switch hook as hereinafter set forth andclaimed.

In the drawings,-Figure lis a perspective view of my hook; Fig.,2, asimilar view, from the opposite side; Figs. 3 and 4, face views, fromthe side, showing the parts in different positions; and Fig. 5, a planvview.

A indicates a base plate adapted to be secured by screws, or othermeans, to the box or casing; and B indicates an arm projecting from thefront face of the plate at one side of the slot a therein.

Arm B is cut away or slotted from its lower edge upward, to form twosmaller dependf ing arms or members b and c,-the former being at thefront and having a straight inner wall, and the latter being in rear ofmember b and having a receding wall, the two members being thusseparated by a slot whose mouth is wide enough to receive the eyeusually secured to the end of the receiver. g

Projecting from the rear face of plate A, is an arm C, carrying theinsulating block d and the contacts c, e', e2, e3.

Pivoted to the arm B is a lever D carrying at its outer end a thumbpiece f; on its lower face, a curved arm or hook g; and at its rearinner end, a contact plate h, which is designed to rub over the contactse when the lever is rocked upon its pivot, and which arm is preferablyslitted as at j.

A leaf spring E secured to the rear of plate A is connected at its upperend with a link/L' secured to the lever, the arrangement being such thatwhen the lever is pulled down, the link forces the upper end of thespring away from the plate. The tension of the spring is sufficient toenable it to hold the lever in either of its two positions and preventits accidental movement.

When the receiver is in place the eye or loop thereof is upon the arm orhook ggof the lever, and is vembraced by, or held upon the hook bymeansof the members b c of arm B. When in this position the plate h isover the contacts e2 and e3 and the telephone cut out. By pulling downupon the thumb piece while holding the receiver, the lever will berocked or tipped, its plate h moved from the vcontacts e2 e3 to thecontacts e c', and the hook g swung down away from the members?? o so asto permit the removal of the receiver from the hook of the lever. Whenit is desired to replace the receiver, its eye is passed up into theslot in arm B,-v between -the members b c and in line with the hookg,-and while the receiver is held in this position by one hand, thelever will be raised by pressing upward upon the thumb piece with thethumb, and the hook carried through the eye.

An important advantage in the present constructionresides in the factthat the receiver cannot be moved from its' locked position by anaccidental blow, as frequently occurs with vother devices.

What I' claim is- 1. In combination with plate A having a slot atherein; arm O carrying the insulated block d and contacts; an arm Bprojecting from the front of the plate and slotted or cut away toreceive the eye of the telephone receiver; and a lever pivoted to thearm B and provided with contact plate h and hook g.

2. In combination with plate A having a slot a therein; arm C providedwith the insulated block d and contacts; arm B provided with twoseparated members b c; lever D pivoted to arm B and projecting throughslot a; contact plate h; and a hook g carried by the lever. Y

3. In combination with plate A, arms B and C, lever D, and contacts; theleaf spring E secured at one end to the plate; and the link 71 connectedat its ends to the spring and the lever.

4. In combination with plate A, and the arms B and O, the latter havingblock cl and contacts; the lever D having atits end the plate h which isslit as at j,and,working over the contacts.

In witness whereof I hereunto set my hand in the presence of twowitnesses.

EDGAR S. COMBS.

ICO

